Battery charger



FIG. 1 is a top, right, front perspective view of a battery charger;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a left side view thereof;

FIG. 5 is a right side view thereof;

FIG. 6 is a top view thereof; and,

FIG. 7 is a bottom view thereof.

Structural elements depicted by broken lines have been shown for the purpose of illustrating portions of the battery charger that form no part of the claimed design. 

CLAIM We claim the ornamental design for a battery charger, as shown and described. 